Merge pull request miloyip#209 from relaxcn/master

Macro argument should be enclosed in parentheses

Author: miloyip

tutorial03/test.c

@@ -21,7 +21,7 @@ static int test_pass = 0;
 #define EXPECT_EQ_INT(expect, actual) EXPECT_EQ_BASE((expect) == (actual), expect, actual, "%d")
 #define EXPECT_EQ_DOUBLE(expect, actual) EXPECT_EQ_BASE((expect) == (actual), expect, actual, "%.17g")
 #define EXPECT_EQ_STRING(expect, actual, alength) \
-    EXPECT_EQ_BASE(sizeof(expect) - 1 == alength && memcmp(expect, actual, alength) == 0, expect, actual, "%s")
+    EXPECT_EQ_BASE(sizeof(expect) - 1 == (alength) && memcmp(expect, actual, alength) == 0, expect, actual, "%s")
 #define EXPECT_TRUE(actual) EXPECT_EQ_BASE((actual) != 0, "true", "false", "%s")
 #define EXPECT_FALSE(actual) EXPECT_EQ_BASE((actual) == 0, "false", "true", "%s")